<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>

    <style>
        .list {
            display: table;
            width: 100%;
        }

        .row {
            display: table-row;
        }
        .item {
            display: table-cell;
        }
    </style>
</head>
<body>

<div class="list">
    <div class="item">abccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc</div>
    <div class="item">bbbbbbb</div>
    <div class="item">c</div>
    <div class="item">ddd</div>
</div>


<div>
    <div class="item">b</div>
    <div class="row">a</div>
    abc
</div>
</body>
</html>